NASA's Center for Near Earth Object Studies (CNEOS) estimated the size at between 131 and 328 feet.
The safety of our planet, however, was jeopardized over the weekend when scientists nearly failed to detect a football field-sized asteroid heading towards Earth. Scientists have assured that the asteroid is a potential threat to the Earth, and his course does not involve a direct meeting and clash with the Blue planet.
The giant asteroid was sighted a mere 21 hours before its closest approach to Earth, by the Catalina Sky Survey in Tucson. Some hours later, Spaceweather.com reported that an amateur astronomer Michael Jager of Weibenkirchen Austria has posted the video of the asteroid that was recorded when asteroid fly past through the southern constellation Serpens. That's about three to six times wider than the space rock that penetrated the Earth's atmosphere in 2013 and exploded over the city of Chelyabinsk in Russian Federation, packing 20 to 30 times the energy of the Hiroshima atomic bomb, notes EarthSky.
Earthsky.org reported: "An Apollo type earth-crossing asteroid, was flying through space at 66,174 miles per hour".
According to EarthSky, a large portion of the asteroid would have been disintegrated by friction with the air upon entering our atmosphere. However, an asteroid this size is capable of causing some regional damage, depending on various factors such as composition, speed, entry angle, and location of impact. But according to Andrew Rader, a researcher and engineer at SpaceX, 2018 GE3 is "vast enough to destroy a city". Had 2018 GE3 been just a little closer, scientists and officials would have had little warning once the space rock plunged into the Earth's atmosphere. At least three other small space rocks are set to fly past Earth on Tuesday - with the largest measuring 111 feet around.